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Toto Bathroom Remodeling: The Dallas Owner’s Guide
Toto bathroom remodeling in Dallas typically runs between $9,000 and $28,000, depending on whether you’re replacing a single failing component or rebuilding the full wet area. We stock Toto-compatible parts on the truck and install them same-week in most Dallas neighborhoods, from Lakewood to Preston Hollow. Most owners discover their Toto part has failed the hard way: a toilet that runs all night, a shower valve that won’t hold temperature, or a fill valve that keeps cycling long after the tank should be quiet.
You should know who is coming, what it costs, and what happens if something goes wrong, before we ever pick up a tool. That’s how Mason Remodeling Co Dallas works. Founded in 2004 as part of the Threshold Group family of home-service companies, we’re an independent service provider, not affiliated with Toto, but we work on their fixtures every week.
Which Toto Models This Applies To

Toto makes several distinct lines, and not every part crosses between them. The Drake and Drake II toilets share some internals, but the Ultramax and Neorest series use entirely different flush valves, fill valves, and electronic components. The Neorest in particular has a control board and pump assembly that no universal part will replace. That compatibility gotcha is the biggest thing we see homeowners miss when they buy parts online.
For Toto toilets made in the last 15 years, the model number is stamped inside the tank, near the water line, or on the underside of the lid. For shower valves and wall-hung fixtures, the rough-in valve body carries a small identification tag behind the trim plate. If you can’t find it, bring us a photo of the fixture and the inside of the tank; we can usually identify it from the shape of the flush lever and the fill valve style. Toto uses a 3-inch flush valve on most modern toilets, which is larger than the 2-inch valves on older American Standard and Kohler units. Aftermarket fill valves from Korky and Fluidmaster work on most Toto models, but we default to original Toto internals on anything under warranty because the tolerances matter, especially on dual-flush mechanisms. We also keep Toto’s THU series of high-efficiency toilets in mind when quoting replacement work, since Dallas water rates make a 1.28-gallon flush a real money-saver over a decade.
Styles & brands we work with







Signs Your Toto Bathroom Remodeling Is Failing
- The toilet runs for 30 seconds after every flush, then stops, then runs again at random. The flapper or flush valve seal has hardened. Dallas water is moderately hard, and mineral buildup on the valve seat is the usual culprit. A new Toto-branded seal kit usually fixes it in about 20 minutes.
- You have to hold the lever down to get a full flush. The chain or lift wire has stretched, or the flush lever itself has worn at the pivot. On Toto’s side-mount models, this is a design quirk, but the fix is a $15 lever kit, not a prayer.
- The shower valve won’t hold temperature. If you’re in an older Dallas home with original Toto pressure-balance valves, a failing cartridge shows up as sudden hot or cold spikes when someone flushes a toilet elsewhere in the house. The cartridge needs replacement, not a whole new valve body.
- Water seeps from under the tank onto the floor. The tank-to-bowl gasket has compressed, or the bolts holding the tank have corroded. In Dallas’s summer heat, rubber gaskets in unconditioned half-baths age faster than the rest of the fixture. This one can rot a subfloor if ignored, so treat it as urgent.
- The bidet seat makes a grinding noise then stops working. Toto’s Washlet seats have a small water pump and heating element that fail after about 8 to 10 years of daily use in Texas water. The seat is repairable in some cases, but a replacement Washlet often costs less than the repair once you factor in labor.
See the difference
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AfterReplacement Cost & What’s Included

A full Toto bathroom remodel in Dallas runs $9,000 to $28,000. At the lower end, you’re replacing a toilet, a vanity, and a shower valve with mid-range fixtures and keeping the existing layout. At the higher end, you’re moving walls, waterproofing a walk-in shower with a Schluter system, and installing a Toto Neorest or integrated Washlet with the required dedicated electrical circuit. Here’s what we tell homeowners when they ask for the numbers:
- Toto toilet replacement with installation: $600 to $1,800, depending on model and whether the closet flange needs repair.
- Toto shower valve and cartridge replacement: $350 to $900, including opening the wall and patching correctly.
- Toto Washlet seat with electrical rough-in: $800 to $2,500, including the GFCI circuit Dallas code requires near the toilet.
- Full bathroom remodel with Toto fixtures: $9,000 to $28,000, written line-item by line-item before any work starts.
Every price we give is a written price before any work starts. No verbal estimate that grows on the final bill. Our work is covered by the 365-Day Done Right Promise. If the work isn’t right within a year of completion, we make it right at no cost to you. And if a repair or installation fails, you get a free second visit, no charge, no dispute process.
DIY or Call Us?
Replacing a Toto fill valve or flapper is a straightforward job most homeowners can handle with a wrench and a sponge. The plastic nut on Toto fill valves threads by hand, and the tube runs exactly where the old one ran. But if the problem is inside your wall, a shower valve cartridge, a leak that has already reached the subfloor, or anything with a dedicated electrical circuit, stop and call us. Water damage in a Dallas slab home is not a weekend project. You’ll end up paying less to get it done right the first time than to fix the second and third attempts.
Call (432) 302-8761 and we’ll give you a straight answer on what’s failing, what it costs, and whether it’s worth saving. Estimates are free.
FAQs

Most Toto toilets last 20 to 30 years with normal use, but the internal parts (fill valves, flappers, seals) typically need replacing every 5 to 8 years. Dallas’s hard water shortens that to 4 to 6 on the original internals. Shower valve cartridges last 10 to 15 years. If your fixture is over 15 years old and leaking, replacement is usually cheaper than chasing parts.
Yes, in most cases. A fill valve, flapper, tank-to-bowl gasket, or shower cartridge is a repair, not a replacement. We always try the repair first because it’s cheaper. But if the fixture is corroded, cracked, or the model has been discontinued and parts are no longer stocked, a new Toto unit is the honest answer. Call (432) 302-8761 and we’ll tell you which one applies to your situation.
A standard Toto toilet replacement takes about an hour and a half, including removing the old unit, checking the closet flange, and hauling the old fixture away. A shower valve replacement takes two to three hours because we open the wall, swap the valve, test for leaks, and close the wall back up with proper waterproofing. A full Toto bathroom remodel in Dallas runs one to three weeks depending on scope.
Yes. We stock common Toto fill valves, flush valve seals, flappers, and shower cartridges on our trucks, along with parts for KraftMaid cabinetry, Cambria, and Silestone surfaces. If you need something specific, like a Neorest control board, we order it direct and schedule the install as soon as it arrives, usually within three to five business days in Dallas. Call (432) 302-8761 for an exact quote, estimates are free.
Written by Isaac Pruett, Owner, Mason Remodeling Co Dallas at Mason Remodeling Co Dallas, serving Dallas and nearby areas.


